Bradysia stricta, Vilkamaa, Pekka, Hippa, Heikki & Mohrig, Werner, 2012

Vilkamaa, Pekka, Hippa, Heikki & Mohrig, Werner, 2012, The genus Bradysia Winnertz (Diptera, Sciaridae) in New Caledonia, with the description of thirteen new species, Zootaxa 3489, pp. 25-44 : 42

Bradysia stricta sp. n.

Figs 13 A–D

Material studied. Holotype male. NEW CALEDONIA, Rivière Bleue N.P., (parc 7), rainforest, 21.vii.1992, Bonnet de Larbogne, Chazeau & Guilbert (in MNHN). Paratypes. 1 male, same data as holotype (in MNHN); 1 male, Ouinné Valley, 730 m, 22°02'S, 166°28'E, humid forest with araucarians, 27–30.x.1984, Tillier & Bouchet (in MNHN).

Description. Male. Head. Brown, antenna unicolorous brown, maxillary palpus very pale brown. Eye bridge 3 facets wide. Face with 9–10 scattered longer and shorter setae. Clypeus with 1–2 setae. Maxillary palpus with 3 palpomeres; palpomere 1 longer than palpomere 3, palpomere 2 shortest; palpomere 1 with 4 setae, with a dorsal patch of sensilla in a shallow depression; surface of antennal flagellomeres rough, body of flagellomere 4 ( Fig. 13 A) 1.95–2.0x as long as wide, the neck shorter than broad, the longest setae as long as the width of flagellomere. Thorax. Pale brown, setae dark. Anterior pronotum with 5–6 setae. Episternum 1 with 3–5 setae. Scutum with long dorsocentrals, with some longer and shorter laterals, scutellum with 2 longer and some short setae. Wing. Hyalinous. Length 1.3 mm. Width/length 0.40. Veins distinct. R1/R 0.65. c/ w 0.80. r-m and than bM subequal in length. M, CuA, bM non-setose, r-m with 1 seta. Legs. Yellow. Coxal setae pale. Apical part of front tibia, Fig. 13 B: tibial organ with pale vestiture forming a short row. Front tibial spur slightly longer than the tibial width. Claws without teeth. Abdomen. Setae dark. Hypopygium ( Figs 13 C, D). Pale brown, paler than abdomen. Intercoxal lobe with 5 setae. Gonocoxa narrow, longer than gonostylus, mesial margin with long setae on the apical half, basoventrally with mesial area of denser setosity. Gonostylus narrow, straight, narrowed only at very apex, with the mesial side weakly impressed; with dense apical setosity, with a strong apical tooth, with 5 subapical megasetae, the basalmost of which separated from the others. Tegmen truncate, with rather straight lateral sides, weakly sclerotized, with a small area of aedeagal teeth.

Discussion. Bradysia stricta can be distinguished from all other New Caledonian species of Bradysia in having both the intercoxal lobe in its hypopygium and the apical tooth on its gonostylus. Bradysia nudilobata also has an intercoxal lobe of the hypopygium, but with short setosity, not as long as B. stricta , and it lacks the apical tooth. For the other two New Caledonian species of Bradysia with the apical tooth of the gonostylus, see under B. aequispina . Bradysia stricta can be placed in the B. angustipennis group in the sense of Menzel and Mohrig (2000).

Etymology. The name is Latin, stricta , straight, referring to the straight gonostylus.

Figures

FIGURE 13. Bradysia stricta sp. n. (A paratype, B – D holotype). A. Antennal flagellomere 4, lateral view. B. Apical part of front tibia, prolateral view. C. Part of hypopygium, ventral view. D. Gonostylus, ventral view. Scale 0.1 mm.